AFAIK they will not reply to direct emails. Given the lack of account security, I sort of understand why they wont and insist on all contact being via the homepage>contact us facility and arrange a call or live chat.
Given the current situation, whatever method you eventually use it's going to be a lengthy wait time I suspect.
I tried both email us and Live chat but it says temporarily unavailable.
Is there a phone number for ebay UK and USA (UK is more needed for me)